Winding reel for a sharpening machine



May 1953 c. DELAFONTAINE 2,836,374

WINDING REEL FOR A SHARPENING MACHINE Original Filegl March 12, 1951 ms m am mmvl. JWWKWE 7. 4V 3 Z q WWW mm mm Qwd 2:232 mv wmv Nmv 5v mm 1% 9.5232 5m new mom won 0 mm? omv i: H M .I mmm 9m 9 A. ll m5 a JQHH- .,,I 6 .v Rm I @fi/ GOV how .L 0mm NON 1 .mv, f I w a L i Q o \QQN w I om l Ill/HI 0 0 o O 0% $8 Gm 5w m3 I. II il ii 4 m6 mi 2m mm mmv #mv ib LUV- 4 IL wum mew |1|||I1| l 1| T/mw ow m6 N? hwfim nm ]N V EN TOR. Gil/9P1 E 5 DEL H/ ON THI/Vf 197' 7' OQNE V5 United States Patent WINDING REEL FOR A SHARPENINGMACHINE Charles Delafontaine, North Hollywood, Calif., assignor to The Bank of America National Trust and Savings Association, Los Angeles, Calif., a national banking corporation of the United States of America Original application March 12, 1951, Serial No. 215,127,

now Patent No. 2,709,874, dated June 7, 1955. Divided and this application April 29, 1955, Serial No. 504,821

2 Claims. (Cl. 24283) This invention relates to a machine for sharpening the edges of strips of metal, and has particular reference to a winding reel in a machine for continuously grinding, honing and stropping metal strips to be used for safety razor blades.

This application is a division of my copending application Serial No. 215,127 filed in the United States Patent Ofdce on March '12, 1951, now U. S. Patent No. 2,709,874, issued June 7-, --1955.

One of the principal objects of my invention is to provide a novel winding reel in a machine for continuously sharpening an edge or edges of thin metal strips to a high degree of fineness.

in United States Letters Patent No. 2,492,292 and No. 2,492,293, issued December 27, 1949, to George Douglas Jones et al. and to George Douglas Jones, respectively, are disclosed various forms of razors employing a ribbontype blade, that is, a blade of considerable length which is unspooled from a magazine to present successive unused portions as desired. This so-called ribbon blade presents sharpening and storage problems unique in the industry. An important object of the present invention is, therefore, to provide a novel winding reel for a strip sharpening machine, the reel being designed to retain a sharpened strip in coil form without contacting any portion of the sharpened edge of the strip.

Other objects and advantages of this invention it is believed will be apparent from the following detailed description of a preferred embodiment thereof as illustrated in the accompanying drawing.

In the drawings:

Figure 1 is a top plan view of a sharpening machine embodying my invention.

Figure 2 is a sectional elevation taken substantially on the line 2-2 of Figure l.

Referring now to the drawings, the general arrangement of the machine as shown in Figure 1 will be briefly described. A coil of thin strip steel 39 is mounted on a supply reel (not shown) and the strip is fed through a grinding station (not shown), a rough hone station 33, a finish hone station (not shown), thence through a cleaner unit (not shown) and then through the stropping station (not shown). The strip 30 is then led through the pull-out station generally indicated 37, from whence it is formed into a loop 38 and led through the final inspection station 39. The strip passes through intermittent drive unit 49, is formed into a second loop 41, and then led through constant drive unit 42 where the finished sharpened strip is coiled on a take-up reel 43.

The various units forming the respective stations are mounted on a base generally indicated 44 which includes a pair of tubular rail members 45 extending substantially the entire length of the machine.

The pull-out station 37 is provided with rolls for continuously pulling the strip through the respective stations described above. As shown in Figure 1, this station includes a base member 295 secured to the rails 45 and "ice carrying a support frame. Mounted on the frame is a pair of pull-out rolls 297 and 298 cooperating with a central pull-out roll 299 which is secured to a shaft 390 journaled in bearings 301 in the frame. The strip 30 is passed through the bite between rolls 297 and 299 and then around the roll 299 and through the bite between the rolls 299 and 298. A semi-circular guide plate 310 is mounted on the frame and directs the strip around the roll 298 and forwardly therefrom to form the loop 28.

As pointed out above, as the strip 30 proceeds from the pull-out station it is formed into a loop 38. The loop is supported by a table 330 which is mounted on a leg 331. The pair of hold-down rolls -59 act as friction brake means in maintaining the loop in the proper position. The loop functions as a supply medium for the intermittent drive unit 49 which serves to present successive portions of the strip to the final inspection station 39. By means of this loop it will be understood that the portion of the strip between the supply reel 31 and the pull-out station 37 may be continuously in motion while that portion of the strip between the pull-out station 37 and the intermittent drive unit 49 may move intermittently with a dwell of sufficient length of time to permit the sharpened edge of a portion of the strip to be inspected at the inspection station 39.

The inspection station 39 consists of two identical visual inspection units 335 and see, one on each side of the strip, and therefore only one will be described in detail. The units 335 and 336 are secured to a base member 337 mounted on the rails 45.

The inspection unit 335 includes a microscope 353 mounted at an angle from the horizontal as shown, with the objective (not shown) directed at the sharpened edge of the blade. The microscope is provided with focusing wheels and has an upwardly inclined eye piece 353. The inspection unit also includes a housing 361 having a ground glass face and containing a bulb 363 or other suitable light source, the ground glass forming a background for the strip edge. Control boxes 365 and 366 are mounted on the rails 45 adjacent the respective inspection units and are provided with switches 367 for the various light sources.

The intermittent drive unit 443 includes a driving roll 375 and a driven roll 376 mounted on shafts 3'77 and 378 respectively.

The driven roll 376 is pivotally mounted with respect to the frame much in the same manner as the pull-out rolls 297 and 298, being provided with an arm 405 pivotally connected to the frame at one end and having an adjusting link 496 pivotally connected to the other end, which link has an adjusting screw 407 engageable with a tab 4% on the frame. The sharpened and inspected strip is pushed from the intermittent drive rolls into a small loop 4?. which leads to the constant drive rolls 42.

This unit 42 includes a driving roll 416 and a driven roll 417 which are generally similar to the intermittent drive rolls previously described. Here, however, the driven roll, which is mounted on drive shaft 418, is driven at a constant speed. The stub shaft 419 is journaled in the frame 422 and is connected to the shaft 392 by means of a universal joint 423. It will be understood that by means of this drive connection the constant speed rolls are driven at exactly the same speed as are driven the pull-out rolls 297 and 298. Therefore, with the abovedescribed arrangement of constant speed pull-out rolls 297 and 298, loop 38, intermittent drive rolls 375 and 376, loop .1 and constant drive rolls 416 and 417, I have provided means for feeding a strip continuously into one end of the machine and out of the other end of the machine at the same speed, while causing the strip tto intermittently dwell at a point intermediate the .two

A switch box 450 is mounted on the base 44 from which the conduit 451 leads to the various electrical V motors previously described. The box is provided with switch buttons 452 for controlling the operation of thevarious elements of the machine. a 7

Mounted on the rails 45 is the take-up reel base (not shown) having an upstanding post (not shown); Jour traded in the post a vertical shaft 432 which carries the take-up'reel 43. j Mounted below the reel is a pulley 433 for a belt 434 which is connected to a pulley (not shown) mounted beneath the driven roll 417 for driving the takeup reel in synchronism with the constant speed rolls.

The take-up reel includes, a circular plate 435 having a central hub 436 keyed to'the shaft about which the coil 437 of sharpened strip is wound. Means are provided 7 7 surface of the plate is exaggerate'd'in Figure 2 for clarity ofillustration; only a very slight bevel is required.

Having fully described my inventiomit is to be underagainst.

. ed in spaced recesses thereagainst.

. stood that-I do not wishto {be limited to the details'herea in set forth, but my invention is of the full scope of the appended claims.

I claim: 1. In apparatus of the having a central hub abouFwhich the strip may be coiled, and a plurality of permanent magnets mounted in spaced recesses in said 2.1n; apparatus "of the character described, a take-up reel for a sharpenedstrip,saidzreel including a plate hava ing a central hub about which the strip may be coiled, and a surface against which the coil strip is rested, said surface being bevelled in a directiontoward the outer edges 7 of the plate, and a plurality of permanent magnets mountin said plate to hold the coiled strip 7 References Cited' in the file o f this patent;

, V STATES PATENTS Gerhard -i ;i June 26, 1,692,789 7 Young NOV. 20, 1928 2,019,128 FUISt Oct. 29, 1 935 2,167,971 c 7 1939 2,658,695, 1953 character described, a take-up reel for a sharpened strip -said .reel including a plate,

plate to hold the coiled ,strip there- 

